Pretty good introduction to the possibilities of NativeScript for building apps.
I have one suggestion: give us a deeper look into a fully fledged app, like the robot one. In my opinion, the time spent explaining what components there are, how to use the colour schemes, the scrollbar controlled background-music-app, etc. could have been replaced with a short demo and then 'RTFM'. This would have left more time to focus on the more interesting parts.

Liked the talk a lot and it looked really easy to develop an app. This might be a preference but for me the video's with sound sort of got me out of the flow of the talk. Animated gifs or just simple pictures might make it a little bit less unobtrusive

Bringin in robots is always a good idea. I had a question lingering throughout your talk, but no time for Q&A and it wasn't addressed. The question was triggered by lack of comparisons between solutions.
"Don't like/know ReactNative" was a little weak, during the talk I couldn't figure out what's the difference since syntax look very similair and the audience doesn't know NativeScript either.

Well structured session. Clear examples. Good explanations. I get that you like super hero movies Rowdy, but in this session the context got in the way of the content somewhat. Liked the demo with the robot at the end!